Ulnar Artery Pseudoaneurysm – A Rare Cause of Mass on Wrist

Abstract Ulnar artery pseudoaneurysm is an uncommon vascular condition, although trauma, infection, embolism, autoimmune disorders, and connective tissue diseases like Ehlers–Danlos Syndrome are more commonly associated with large vessel aneurysm and less frequently with medium or small vessel aneurysm. Prompt diagnosis and treatment are crucial, as these aneurysms may lead to distal ischemia and digital compromise. Imaging modalities such as Doppler ultrasound, computed tomography angiography, and clinical evaluation are essential for accurate diagnosis. Surgical resection and arterial reconstruction are the primary modes of treatment. We present a case of an ulnar artery pseudoaneurysm probably due connective tissue disorder managed with resection and autologous vein interposition graft.